<template>
  <div>
    <!-- v-for="(item, index) in name" :key="index" -->
    <h2>随机点名</h2>
    <div class="box">
      <span>名字是：</span>
      <div class="qs" >
        {{username}}
      </div>
    </div>
    <div class="btns">
      <button class="start" @click="start">开始</button>
      <button class="end" @click="end">结束</button>
    </div>
  </div>
</template>

<script>
export default {
  
  data(){
    return {
      name:['关羽','张飞','赵云','马超','黄忠','吕布','张辽','庞德','曹操','刘备'],
      username:'这里显示姓名',
      timer:''

    }
      
  },
  methods: {
    start(){
     clearInterval(this.timer)
     this.timer=setInterval(() => {
       let i=Math.round(Math.random()*9)
       /* console.log(i);
       console.log(this.name[i]); */
       this.username=this.name[i]
     }, 100);
     
     
    },
    end(){
      clearInterval(this.timer)
    }

  },
};
</script>

<style>
* {
  margin: 0;
  padding: 0;
}

h2 {
  text-align: center;
}

.box {
  width: 600px;
  margin: 50px auto;
  display: flex;
  font-size: 25px;
  line-height: 40px;
}

.qs {
  width: 450px;
  height: 40px;
  color: red;
}

.btns {
  text-align: center;
}

.btns button {
  width: 120px;
  height: 35px;
  margin: 0 50px;
}
</style>